I think it is entirely possible to lose 20 A Jin months. 17 years, I stopped all staple foods such as rice, steamed bread and noodles through Maggie's diet, and only ate lean meat and vegetables. With proper exercise, the time for half a month was reduced 15 kg. Later, because of the tight conditions, it did not persist. But I don't think losing 20 pounds a month should be a problem.